Slides in this set

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What is a Polymer?· A polymer is a long chain molecule made up of small units called monomers.· Polymer means many monomers.· If all the monomer molecules are same: A-A polymer ----A+A+A+A---- = ----A-A-A-A---- eg. Poly(ethene), poly(chloroethene) and PVC· If the monomer molecules are different: A-B polymer ----A+B+A+B---- = ----A-B-A-B---- eg. polyamines (nylons) and polyesters…read more

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Addition polymerisation· Chain growth polymerisation· If the monomers contain a double bond or triple bond, they can add together to make a polymer.· No other products are formed.· The polymer structure can be represented more simply by drawing the repeating unit.…read more

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CopolymerisationA co-polymer is made when two different monomersbecome incorporated into the polymer chain.…read more

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Elastomers· soft and springy· can be stretched, but they return their original shape· Eg: rubber…read more

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Plastics· Not so springy· When deformed, it tends to stay out of shape· Undergoes permanent or plastic deformation· Eg: Polyethene…read more